i heared about a lot of problems with some SDD.
For example, if power supply turned off while windows is running
There are a lot of rumours about SSDs, there always is when people don't fully understand a new technology.
HDDs don't like sudden power failure either, so don't just pull the plug

I guess that's only a problem for enterprise solutions and they probably use an ups anyway.
And I remember numerous lines of harddiscs which just refused to work from one day to another, so there's probably no other option than backup

how long did you were using this setup so far? weeks? months?
I've got mine for a few months now and I'm using my PC mainly for development - which means I'm trying to keep it clean and simple.
I could imagine that wear-leveling is less efficient on an almost full disc - again that wasn't much different with mechanical drives.